Proline and Glycinebetaine Confer Cadmium Tolerance on Tobacco Bright Yellow-2 Cells by Increasing Ascorbate-Glutathione Cycle Enzyme Activities

Mohammad Muzahidul ISLAM; Md. Anamul HOQUE; Eiji OKUMA; Rayhanur JANNAT; Mst. Nasrin Akhter BANU; Md. Sarwar JAHAN; Yoshimasa NAKAMURA; Yoshiyuki MURATA

doi:10.1271/bbb.90305

Biochemistry & Molecular Biology Notes

Proline and Glycinebetaine Confer Cadmium Tolerance on Tobacco Bright Yellow-2 Cells by Increasing Ascorbate-Glutathione Cycle Enzyme Activities

Mohammad Muzahidul ISLAM, Md. Anamul HOQUE, Eiji OKUMA, Rayhanur JANNAT, Mst. Nasrin Akhter BANU, Md. Sarwar JAHAN, Yoshimasa NAKAMURA, Yoshiyuki MURATA

Author information

Mohammad Muzahidul ISLAM
Graduate School of Natural Science and Technology, Okayama University
Md. Anamul HOQUE
Graduate School of Natural Science and Technology, Okayama University
Eiji OKUMA
Graduate School of Natural Science and Technology, Okayama University
Rayhanur JANNAT
Graduate School of Natural Science and Technology, Okayama University
Mst. Nasrin Akhter BANU
Graduate School of Natural Science and Technology, Okayama University
Md. Sarwar JAHAN
Graduate School of Natural Science and Technology, Okayama University
Department of Agricultural Science, Faculty of Agriculture and Biotechnology, University Darul Iman Malaysia
Yoshimasa NAKAMURA
Graduate School of Natural Science and Technology, Okayama University
Yoshiyuki MURATA
Graduate School of Natural Science and Technology, Okayama University

Keywords: proline, glycinebetaine, cadmium stress, ascorbate-glutathione cycle, reactive oxygen species

JOURNAL FREE ACCESS

2009 Volume 73 Issue 10 Pages 2320-2323

DOI https://doi.org/10.1271/bbb.90305

View "Advance Publication" version (October 7, 2009).

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Abstract

Cadmium (Cd) stress significantly decreased membrane integrity and impaired the ascorbate (ASC)-glutathione (GSH) cycle in tobacco Bright Yellow-2 cells. Exogenous application of proline and glycinebetaine (betaine) significantly restored the membrane integrity and increased the activities of ASC-GSH cycle enzymes under Cd stress without maintenance of the rich ASC or GSH pools. Moreover, proline offered more efficient protection against Cd stress than betaine.

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